Wall-fastening.



' which the following is is provided, which threaded spindle element 2, a 40.

an anchor bolt.

PATENT @FFIEQ WALL-FASTEN ING.

Application ined January 27, 1913.

To all whom t may concern:

Be it known that I. "Winnaar RUBLY, a citizen of the United/States, residing at Tuckahoefcounty/of Westchester, State of/ New York, have invented certain new and useful Improvements in rallsFastenings, of

a clear, full, and eX- act description.

This invention relates to' an limproved ywall fastening,

carries at one end a pivoted anchor piece, vat the end of a threaded shank, so that a device may be fastenedto thewall or other article bv first drillin a hole of substantially the same size `as te diameter ofthe threaded shank; then inserting the shank through the hole, so that' the pivoted anchor piece may be allowed to/swing on its pivot across the diameter of.' the hole and prevent the` withdrawal of the bolt; a suitablev nut or other fixture finishes the device to hold it in place, or anything 'supported by it.

The object of Vthis invention is to provide a bolt having a threaded shank with a plurality of recesses on the shank between differentfportions of the thread to permit a ready breaking `of the shank after it is put in place, in the wall. These recesses appear on eah side of a threaded portion, and a nut will span the recesses, andy will always engage at least one of the threaded portions.

In the drawing, the figure is a view in sidev elevation, partly in section, of the wall fas,- tening.

My improved anchor bolt consists of .a

or shank l, nut 3, and a cap 4: for the nut. The threads 3a of the shank are formed in the periphery of a plurality of hubs or shoulders 4a separated by annular depressions 5. One end of the shank l is pivoted, as at 7, to the anchor 2.

Specification of Letters `Patent.

often yknown in the trade as t Such device 1s one which Patented Nov. 9, 31915. serial No. 744,278.

The spindle or shank 'any suitable manner, that is to say, the shoulders 4? may be produced by rolling the shank under pressure, which willv produce the depressions at the same time forcing the material of the shank between the dies up to forni the shoulders in. The `object of providing a shank of this character is to adapt the shank to be easily broken ofi" at a depressed portion upon the nut 3 being screwed home.

The cover part 4 is provided to give a iinish to the nut, and it is made of a stamping corresponding to the shape and the size of the nut so that it will slip over and 'frictionally grasp the nut and be maintained thereby.

I claim 'as my invention l. A threaded fastening bolt having eX tei-nal threads, and a nut rotatable on said threads, the threads being interrupted and depressions produced at intervals along said bolt, said nut adapted to span such depressions and engage the threads on each side thereof at the same time. y

2. A toggle bolt, comprising, in combina-y tion, a shank having external screw-threads, a pivotal anchor piece carried by said shank, and a nut rotatable on the screw-threads, the threads being interrupted and depressions produced at intervals along the shank, said span such depresosions and engage the threads o n each side thereof at the same time.

Signed at. Tuckahoe in the county of IVestchester and State of New York, this 21st day of December, 1912.

IVILLIAM RUBLY.

l may be formed'in Witnesses IV.' R. IVATsoN, F. IVARREN WRIGHT. 

